Patents by Inventor Frank L. Sawyer

Frank L. Sawyer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Pin latch structure
    Patent number: 4099751
    Abstract: A pin latch structure primarily intended for aircraft and arranged to be flush mounted. The latch includes a reciprocable latch pin arranged to be received in a conventional latch socket. The latch pin is retracted or extended by a handle and trigger assembly.Connected to the latch pin is an overcenter biasing means urging the latch pin into its latch socket and the handle and trigger assembly toward its closed condition when the biasing means is in one direction past center; and urging the latch pin to its retracted position and the handle and trigger assembly to its open position when the biasing means is past center in the opposite direction.
    Type: Grant
    Filed: October 27, 1976
    Date of Patent: July 11, 1978
    Assignee: Hartwell Corporation
    Inventors: Lloyd R. Poe, Frank L. Sawyer